M55302/56B50

Overview

The M55302/56B50 is a rectangular MIL-DTL-55302 series connector manufactured by AirBorn, part of the W Series. It features 50 positions arranged in two rows with a 2.54 mm pitch. The component utilizes gold-plated copper alloy pins and terminates via through-hole mounting on a PCB. Constructed with a Polyphenylene Sulfide (PPS) housing, it operates between -65°C and +125°C. Rated for 5 A current and 1 kV voltage, it offers 5 GOhms insulation resistance.

Feature Summary

• Complies with MIL-DTL-55302 military specifications for high-reliability interconnects
• Features gold-plated contacts for corrosion resistance and stable signal transmission
• Utilizes Polyphenylene Sulfide housing for thermal stability and mechanical strength

Applications

• Military avionics systems requiring ruggedized interconnects
• Defense communication equipment interfaces
• High-density board-to-board connections in harsh environments

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Molex/AirBorn before procurement. Confirm that the through-hole termination style matches your PCB fabrication capabilities. Ensure environmental sealing requirements are met if operating outside standard conditions. Cross-reference the manufacturer part number with any legacy designations to avoid ordering errors during production integration.

Selection Notes

Select this model when a 50-position, two-row configuration is required for board-mounted applications. The 2.54 mm spacing accommodates standard wire gauges like 22 AWG. Consider the straight installation angle and free-hanging or board-mount compatibility. Verify that the 1 kV rating and 5 A current capacity align with the circuit's electrical demands and thermal management strategy.

Part Context

This component belongs to the AirBorn W Series, designed for mission-critical applications demanding high density and reliability. The series supports various contact counts and termination styles within the MIL-DTL-55302 framework. It serves as a standardized solution for defense and aerospace sectors where consistent performance under extreme temperatures is mandatory.

Replacement Considerations

The equivalent manufacturer part number is WTA50PD9JL. Verify pinout orientation and housing dimensions match the existing footprint. Ensure the replacement maintains the same gold plating thickness and PPS material grade for identical environmental ratings.